Ionically modified magnetic nanomaterials for arsenic and chromium removal from water

Badruddoza, Abu Zayed Md; Shawon, Zayed Bin Zakir; Rahman, Md. Taifur; Hao, Kow Wei; Hidajat, K.; Uddin, M.S.

doi:10.1016/j.cej.2013.03.114

Cited by 138 publications

(51 citation statements)

References 56 publications

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“…Phosphonium-silane was ionically attached to the surface of Fe 3 O 4 particles to synthesize a super-paramagnetic adsorbent (PPhSi-MNPs) capable of removing arsenic and chromium pollutants from water [118]. Adsorption of both the ions was favourable at low pH range i.e.…”

Section: Different Anionic Speciesmentioning

confidence: 99%

Magnetic adsorbents for the treatment of water/wastewater—A review

Mehta

Mazumdar

Singh

2015

Journal of Water Process Engineering

355

114

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Section: Different Anionic Speciesmentioning

confidence: 99%

Magnetic adsorbents for the treatment of water/wastewater—A review

Mehta

Mazumdar

Singh

2015

Journal of Water Process Engineering

355

114

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“…Better adsorption capacity observed at pH 3 may be attributed to the large number of H + ions present at this pH value, which in turn neutralize the negatively charged hydroxyl groups (OH -) on adsorbed surface thereby reducing the hindrance to the diffusion of dichromate ions. On the other hand, some studies indicate that various kinds of anions in industrial and groundwater, such as chloride, sulfate and nitrate, may lead to competitive adsorption (Badruddoza et al 2013). As per the results reported by and Gupta and Babu (2009) However, in spite of the results in terms of adsorption efficiency, the adsorption capacity obtained (0.14 mg/g for a 5 mg/L Cr (VI)) synthetic solution, and 18 mg/g for 515 mg/L Cr (VI) industrial solution) is comparable with some of the low cost adsorbents reported in the literature, which are indicated in table VI.…”

Section: Table IV Isotherm Parameters and Error Functions From The Smentioning

confidence: 99%

“…To understand the sorption mechanism of Cr (III) on BFD, the kinetic data were fitted into different models reported in literature (Badruddoza et al 2013, Li et al 2013, Nethaji et al 2013, Oladoja et al 2013. A brief description of the kinetics model is mentioned as follow.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Adsorption of Chromium From Steel Plating Wastewater Using Blast Furnace Dust

Pedroza

Aguilar

Martínez-Luévanos

et al. 2017

Rev. Int. Contam. Ambie.

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In this work, blast furnace dust (BFD) obtained from a steel dust collector is used as low-cost adsorbent material for chromium removal from steel industrial plating wastewater. This study shows that BFD present physical and chemical characteristics, such as chemical composition, magnetic properties and particle size, suitable for application in adsorption of ions such as chromium. Different kinetics approaches and isotherms models were evaluated to describe the adsorption process. According to results, chromium adsorption follows intra-particle diffusion with adsorption in active sites. Freundlich and Dubinin-Radushkevich isotherms parameter and low free energy obtained from isotherms studies indicate that chromium adsorption occurs by of a cooperative physical adsorption process, due to the electrostatic attraction between protonated FeOH + and HCrO 4 -. Although the results indicate that BFD adsorb partially the chromium, it could represent an attractive low-cost absorbent option as complementary method for removal of chromium in the steel plating wastewater treatment.Palabras clave: remoción, óxidos de hierro, cinética, bajo costo RESUMEN En este trabajo se utilizó polvo de alto horno (BFD, por sus siglas en inglés) obtenido de un colector de polvo de acería, como material adsorbente de bajo costo para la remoción de cromo de aguas residuales de la industria del cromado. Este estudio muestra que el BFD tiene características físicas y químicas, tales como su composición química, propiedades magnéticas y tamaño de partícula, que pudieran aplicarse en la adsorción de iones metálicos como el cromo. Para describir el proceso de adsorción de cromo usando BFD fueron evaluados diferentes modelos cinéticos y de isotermas de adsorción. De acuerdo con los resultados, la adsorción de cromo ocurre mediante Rev. Int. Contam. Ambie. 33 (4) 591-603, 2017 DOI: 10.20937/RICA.2017 F.R. Carrillo Pedroza et al. 592difusión intrapartícula y adsorción en sitios activos. Los valores de energía libre y de los parámetros obtenidos de las isotermas de Freundlich y Dubinin-Radushkevich indican que la adsorción del cromo se lleva a cabo por un proceso de adsorción física cooperativa de atracción electrostática entre el ion protonado FeOH + y el HCrO 4 -. Aunque los resultados indican que el cromo es adsorbido parcialmente por el BFD, el hecho de que éste sea un material de bajo costo (por ser un residuo de acería) puede representar una opción atractiva complementaria en la remoción de cromo en aguas residuales de la industria del cromado.

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“…Magnetic Fe 3 O 4 nanoparticles were modified by phosphonium silane, which enhanced their adsorption capacity of Cr(VI) at optimum pH. However, desorption of chromium from these modified nanoparticles using NaOH was poor [129]. Aminosilicate-functionalised titanium dioxide nanotubes modified with gold nanoparticles supported on EDAS (EDAS/(TiO 2 NTs-Au) NCM ) photocatalytically reduce Cr(VI) to Cr(III) (using oxalic acid as electron donor) with 77% efficiency.…”

Section: Nanoadsorbents For Chromium Remediationmentioning

confidence: 99%

Removal of chromium from industrial effluents using nanotechnology: a review

Mitra

Sarkar

Sen

2017

Nanotechnol. Environ. Eng.

132

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The presence of chromium in industrial effluents has become a huge problem worldwide as hexavalent chromium is highly toxic to animals due to its ability to generate reactive oxygen species in cells. The trivalent state of chromium, on the other hand, is significantly less toxic and also serves as an essential element in trace amounts. When industries such as electroplating, tannery, dyeing and others release their effluents into water bodies, hexavalent chromium enters the food chain and, consequently, reaches humans in a biomagnified form. Many remediation processes for removal of hexavalent chromium have been researched and reviewed extensively. These include chemical reduction to trivalent chromium, solvent extraction, chelation and adsorption, among others. It has been generally concluded that adsorption (and/or subsequent reduction) of hexavalent chromium is the best method. However, relatively little is known about the potential of using nanoparticles as adsorbents for the removal of hexavalent chromium from industrial effluents. This method of nanoremediation is more effective than conventional remediation methods and is cost-effective for the industry in the long run. This article reviews the various remediation methods of hexavalent chromium, with emphasis on the field of nanoremediation.

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Ionically modified magnetic nanomaterials for arsenic and chromium removal from water

Cited by 138 publications

References 56 publications

Magnetic adsorbents for the treatment of water/wastewater—A review

Magnetic adsorbents for the treatment of water/wastewater—A review

Adsorption of Chromium From Steel Plating Wastewater Using Blast Furnace Dust

Removal of chromium from industrial effluents using nanotechnology: a review

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